What Trant Engineering does

Trant Engineering Ltd is a family-owned, UK-headquartered Engineering Procurement and Construction (EPC) contractor founded in 1958 and headquartered in Southampton. The company delivers multi-disciplinary design, offsite manufacture, MEICA, civil construction, and commissioning services to enterprise clients across the Process & Water, Energy, Nuclear, Oil & Gas, and Defence sectors, employing more than 1,000 people and generating turnover in excess of £130 million. Its core client base comprises UK regulated water utilities (Thames Water, Southern Water, South West Water, Wessex Water, Bristol Water), National Grid, major oil and gas operators (ExxonMobil at Fawley, Valero at Pembroke), and the UK Ministry of Defence, with framework agreements as the primary commercial vehicle.

The technical platform combines in-house process, civil, mechanical, EICA, and BIM design with an offsite manufacture and assembly facility producing proprietary products including Motor Control Centres, control panels, LV switchboards, ATEX-certified hazardous area equipment, and package treatment solutions (T-SAF, T-MBR, cyclic nitrate neutrality systems, UV disinfection, SEWPAS airlift sludge removal, fuel storage and transfer systems). The company holds ISO 9001, 14001, 45001, 14064, Cyber Essentials Plus, and ATEX certifications, and has won 38 consecutive RoSPA Gold Awards plus multiple ICE and RICS engineering awards.

The business model is project-based enterprise sales through competitive tendering and long-term framework contracts, supplemented by hardware sales of manufactured control equipment and modular treatment packages. Revenue mechanics centre on EPC fixed-price contracts, recurring framework mini-competitions (notably AMP8 water utility programmes), and direct procurement from public and private sector clients. Go-to-market is exclusively direct, with no third-party channel partners; geographic reach extends across the UK (offices in Southampton and Exeter), the Falkland Islands, Ascension Island, the Channel Islands, and Singapore.

Name

Trant Engineering

Legal name

Trant Engineering Ltd

Website

https://trant.co.uk

Company type

Private

Founded year

1958

Operating status

Operating

Headcount range

251–500 employees

Short description

Trant Engineering is a family-owned UK EPC contractor delivering multi-disciplinary design, construction, offsite manufacture, and MEICA services to water utilities, energy, nuclear, oil & gas, and defence clients, with turnover exceeding £130M and a workforce of over 1,000.

Ownership category

akta.pro rank

Product category

Engineering and Construction Services

NAICS

Engineering Services (541330), Engineering Services (54133)

SIC

Misc Industrial & Commercial Machinery & Equipment (3590)

akta.pro primary industry

Construction Management & Delivery (EPCM/CMAR/Design-Build Oversight) (EUANALAE)

akta.pro secondary industries

Construction Management & General Contracting (EPCM, Scheduling, QA/QC, HSE) (EUAMAFAJ), Balance-of-Plant (BOP) & Civil Works for Power Plants (EUAEAAAL), Combined Cycle & Cogeneration (CHP) EPC (EUAEAAAB), Balance-of-Plant (BOP) EPC (Turbine Island, Conventional Systems, Buildings) (EUAKAAAF), Instrumentation & Control (I&C) Integration & Commissioning Support (EUAKAAAH)

Keywords

• Engineering procurement construction
• Water treatment infrastructure
• Nuclear decommissioning services
• Substation civil engineering
• Modular offsite manufacturing

Headquarters

HQ city

Southampton

HQ country

United Kingdom

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. EPC Project Delivery: Full Engineering Procurement and Construction services for private and public sector clients across all sectors. Revenue generated through fixed-price project contracts, framework agreements, and direct procurement.
2. Framework Contracts: Long-term framework arrangements with major utilities (Thames Water AMP8, South West Water, Wessex Water, National Grid) providing recurring project flow and revenue stability.
3. Control & Automation Products: Design, manufacture and supply of custom Motor Control Centres, control panels, hazardous area equipment, and LV switchboards for industrial applications.
4. Package Treatment Solutions: Containerised and modular treatment plant solutions including UV disinfection, fuel systems, and water treatment modules.
5. Training Services: In-house CITB and British Safety Council accredited training facility providing courses and NVQs. EUSR approved provider.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Trant Engineering provides full Engineering, Procurement and Construction (EPC) services to water utilities, energy companies, nuclear site operators, and government/defence clients across the UK and internationally. Its core offering combines in-house multi-disciplinary design (process, MEICA, civil, EICA, BIM), offsite manufacture of modular treatment and fuel systems, and custom-built automation products (Motor Control Centres, control panels, LV switchboards, ATEX-certified hazardous area equipment), delivered through framework contracts and direct project execution.

Product overview

Trant Engineering is an Engineering Procurement and Construction Company offering a portfolio of integrated services and manufactured products. The core offering spans Innovation Design & Solutions (including BIM, civil, process, mechanical, and EICA design), Automation Control & Technology (Motor Control Centres, Control Panels, Software System Integration, Hazardous Area Equipment, Operational Technology, and LV Switchboards), and Offsite Manufacture & Assembly (producing modular/containerised solutions including Fuel Systems, wastewater treatment, and water treatment systems). Key manufactured products include Motor Control Centres (MCCs), Control Panels, Hazardous Area Equipment, LV Switchboards, and package treatment solutions (T-SAF, T-MBR, UV Disinfection, SEWPAS, Fuel Storage & Transfer Systems). The company operates across Energy, Process & Water, Nuclear, and Defence sectors with full EPC capabilities from design through to commissioning.

Differentiator

Problem solved

Functional benefit

Products and services

• Innovation Design & Solutions In-house multi-disciplinary engineering design service providing process, civil, mechanical, EICA, and Building Information Modelling design solutions to maximise client efficiencies across the full life cycle of EPC projects.
• Automation Control & Technology Design, custom build and supply of control panels, motor control centres, hazardous area equipment, LV switchboards, and operational technology solutions for industrial automation across all sectors.
• Offsite Manufacture & Assembly Specialised offsite fabrication and assembly service producing modular and containerised treatment solutions including fuel systems, wastewater treatment modules, and water treatment modules at the company's manufacturing facility.
• Energy EPC Services Full Engineering, Procurement and Construction services for power generation, electrical distribution, and Oil & Gas facilities, including substations, wind farms, energy-from-waste plants, and upstream/downstream operations.
• Process & Water EPC Services Engineering and project delivery services for municipal and industrial water and wastewater treatment, serving UK water companies with full design-to-commissioning capability under AMP framework programmes.
• Nuclear EPC Services Construction services for nuclear decommissioning including enabling works, infrastructure, MEICA design, installation, commissioning, and offsite manufacture of waste storage facilities for nuclear site operators.
• Defence/International EPC Services International engineering project delivery in remote regions including Falkland Islands and Ascension Island, covering defence infrastructure, water/wastewater treatment, and oil and gas facilities for government and defence clients.
• Nitrate Neutrality Solution for Housing Developments Cyclic technology treatment plant that removes nitrates from wastewater to achieve nitrate neutral discharge, enabling housing developments to meet planning requirements with total nitrate values below 10mg/l, based on 400+ plants operating globally.
• Motor Control Centres (MCCs) Custom-built high-quality motor control centres offering conventional, intelligent and withdrawable systems with form ratings from 1 to 4, compliant with BS EN 61439-3:2012 for industrial automation applications.
• Control Panels Wide range of custom-built control panels for conventional, intelligent and withdrawable systems, compliant with BS EN 61439-3:2012 and international standards for industrial automation.
• Hazardous Area Equipment ATEX-certified flameproof enclosures (Ex d) and equipment for zones 0, 1 & 2 gas groups (IIA, IIB, IIC) and zones 20, 21 & 22 dust groups, certified to EN60079-0:2012 and EN61241-1:2004.
• LV Switchboards & Assemblies Custom-built Low Voltage Switch Boards (LVSBs) compliant with BS EN 61439-3:2012, available in form ratings 1 to 4 with front/rear access configurations for industrial and utility installations.
• Submerged Aerated Filter (T-SAF) Proprietary submerged aerated filter technology for secondary and tertiary wastewater treatment applications, delivered as an offsite-manufactured product.
• Membrane Bioreactor (T-MBR) Proprietary advanced membrane bioreactor technology for wastewater treatment providing high-quality effluent for reuse applications, delivered as an offsite-manufactured product.
• Containerised UV Disinfection Package Containerised ultraviolet disinfection system for water and wastewater treatment applications, delivered as an offsite-manufactured modular product.
• Airlift Sludge Removal Plant (SEWPAS) Efficient sludge removal system using airlift technology for wastewater treatment facilities, delivered as an offsite-manufactured product.
• Fuel Storage & Refuel System (FSRS) Complete fuel storage and refuelling system designed for defence and industrial applications, including secondary containment upgrades for fuel depots.
• Fuel Transfer System (FTS) Fuel transfer system for safe and efficient handling of fuel products, supporting defence and industrial fuel infrastructure projects.
• Master Meters Master metering solutions for accurate measurement of water and fluid flows, supplied as part of offsite-manufactured treatment plant packages.
• Software System Integration Mission-critical systems integration service for industrial processes combining hardware, software and engineering for process automation solutions using PLC, HMI and SCADA from Rockwell, Siemens and Wonderware.
• Operational Technology Solutions End-to-end data collection, control and optimisation service including OT front-end design, telemetry modifications, ICA panels, HMI & PLCs, SCADA equipment and field instrumentation for industrial process operations.

Quantifiable outcome

• 90% repeat business rate
• +6 more outcomes

Named customers15 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• SFC UmwelttechnikcoreTechnology or IntegrationStrategic technology partnership for advanced water and process treatment solutions. Working with SFC enables Trant to utilise proven advanced technology including cyclic treatment processes for optimal solutions for water and process industry clients in UK and internationally. Partnership supports containerised and modular treatment solutions development.

Scale indicators8 records

Recent moves4 records

Expansion highlights6 records

Broad incumbents

• Costain Group: UK-listed infrastructure and engineering solutions provider with significant water, energy, and nuclear exposure. Directly competes with Trant on AMP framework contracts (Thames Water, Severn Trent, United Utilities) and National Grid work, but operates at substantially larger scale with broader transport and digital offerings.
• Kier Group: UK infrastructure services group with Water, Highways, Utilities and Construction divisions. Direct competitor on AMP frameworks and National Grid substation works; operates at significantly larger scale with broader transport and facilities capabilities, but competes for the same framework slots Trant targets.
• Balfour Beatty: Major UK-listed infrastructure group with deep water utilities, power transmission (National Grid framework), and nuclear exposure. Direct Tier-1 competitor on AMP and National Grid framework contracts, with substantially larger bonding capacity and geographic reach but less focused on mid-sized MEICA/process EPC.
• Mott MacDonald: Global engineering consultancy and project delivery organisation with extensive water, energy, and nuclear practices. Competes with Trant on design-and-build water projects (including AMP frameworks) and provides EPCM services overlapping with Trant's in-house design capability, though its core model is consultancy-led rather than self-delivery.
• MWH Treatment (Stantec): Stantec-owned UK water treatment specialist (formerly MWH Treatment) operating AMP7/8 framework contracts with multiple UK water companies. Highly comparable EPC offering in water treatment with similar MEICA/process integration to Trant's Process & Water division, though typically on larger project scopes.
• Galliford Try: UK-listed construction group with Environment (water) and Highways divisions. Competes with Trant on AMP framework contracts and has similar MEICA/civils integration, though with broader building and highways exposure and significantly larger scale.

Direct peers

• Clancy Group: UK family-owned water and infrastructure contractor operating AMP frameworks with Thames Water, Affinity Water, and others. Highly comparable to Trant in size (~£200M+ revenue), family ownership structure, and water utility EPC service offering, including MEICA and civils delivery.
• Murphy Group: Family-owned UK infrastructure and engineering contractor with water utilities, energy, rail, and natural resources operations. Comparable to Trant in family-ownership structure, multi-sector EPC delivery, and AMP framework participation, with overlapping MEICA and civils capability.
• Barhale: UK infrastructure specialist with significant water utilities (AMP frameworks with Thames Water, Severn Trent), civils, and MEICA capabilities. Direct competitor to Trant on AMP framework mini-competitions, with comparable family-ownership origins and UK mid-market scale.

Emerging players

• Doosan Enpure: Water and wastewater treatment EPC specialist operating in the UK and internationally, with membrane bioreactor and process plant capability. Comparable to Trant's Process & Water and containerised treatment offerings; emerging player in the UK water EPC market with overlapping technology partnerships.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/trant_eng
• LinkedInlinkedin.com/company/trant-engineering

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Trant Engineering